<template>
    <div class="app-container">

        <el-table v-loading="loading" :data="classList">
            <el-table-column label="学院" align="center" prop="deptName" />
            <el-table-column label="专业" align="center" prop="majorName" width="250" />
            <el-table-column label="班级" align="center" prop="className" width="270" />
            <el-table-column label="总人数" align="center" prop="stuCount" />
        </el-table>

        <pagination v-show="total > 0" :total="total" :page.sync="queryParams.pageNum"
            :limit.sync="queryParams.pageSize" @pagination="getList" />

        <!-- 添加或修改班级信息对话框 -->
        <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
            <el-form ref="form" :model="form" :rules="rules" label-width="80px">
                <el-form-item label="专业名称" prop="majorId">
                    <el-cascader :show-all-levels="false" filterable placeholder="请选择专业" v-model="form.majorId"
                        :options="MajorsNameList" @change="handleChange2" clearable>
                        <template slot-scope="{ node, data }">
                            <span>{{ data.label }}</span>
                            <span v-if="!node.isLeaf"> ({{ data.children.length }}) </span>
                        </template>
                    </el-cascader>
                </el-form-item>
                <el-form-item label="年级" prop="gradeId">
                    <!-- <el-input v-model="form.gradeId" placeholder="" /> -->
                    <el-select v-model="form.gradeId" filterable clearable placeholder="请选择年级">
                        <el-option v-for="item in gradeList" :key="item.gradeId" :label="item.gradeName"
                            :value="item.gradeId">
                        </el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="班级名称" prop="className">
                    <el-input v-model="form.className" placeholder="请输入班级名称" />
                </el-form-item>
                <el-form-item label="辅导员" prop="teacherId">
                    <el-select style="width: 300px;" v-model="form.teacherId" filterable clearable placeholder="请选择辅导员">
                        <el-option v-for="item in TeacherNameList" :key="item.id" :label="item.tno + '--' + item.name"
                            :value="item.id">
                        </el-option>
                    </el-select>
                </el-form-item>


            </el-form>
            <div slot="footer" class="dialog-footer">
                <el-button type="primary" @click="submitForm">确 定</el-button>
                <el-button @click="cancel">取 消</el-button>
            </div>
        </el-dialog>
    </div>
</template>

<script>
import { listOwnClass as listClass, getClass, delClass, addClass, updateClass, getMajorsName } from "@/api/stuCQS/basedata/class";


export default {
    name: "Class",
    data() {
        return {
            // 遮罩层
            loading: true,
            // 选中数组
            ids: [],
            // 非单个禁用
            single: true,
            // 非多个禁用
            multiple: true,
            // 显示搜索条件
            showSearch: true,
            // 总条数
            total: 0,
            // 班级信息
            //表格数据
            classList: [],
            // 弹出层标题
            title: "",
            // 是否显示弹出层
            open: false,
            // 查询参数
            queryParams: {
                pageNum: 1,
                pageSize: 10,
                majorId: null,
                className: null,
                deptId: null,
                status: null,
                gradeId: null,
            },
            // 表单参数
            form: {},
            // 表单校验
            rules: {
                majorId: [
                    { required: true, message: "专业id不能为空", trigger: "blur" }
                ],
                className: [
                    { required: true, message: "班级名称不能为空", trigger: "blur" }
                ],
                gradeId: [
                    { required: true, message: "年级不能为空", trigger: "blur" }
                ],
                teacherId: [
                    { required: true, message: "辅导员不能为空", trigger: "blur" }
                ],
            },
            majorValue: null,
            MajorsNameList: [],//专业名称集合
            TeacherNameList: [],//辅导员名称列表
            gradeList: [],//年级列表
        };
    },
    created() {
        this.getList();
        this.getMajorsNameList();
        this.getTeacherNameList();
        this.getGradeNameList();
    },
    methods: {
        /** 查询班级信息列表 */
        getList() {
            this.loading = true;
            listClass(this.queryParams).then(response => {
                this.classList = response.rows;
                this.total = response.total;
                this.loading = false;
            });
        },
        getMajorsNameList() {//获取专业名称列表
            getMajorsName().then(res => {
                this.MajorsNameList = res.data
            })
        },
        getTeacherNameList() {//获取辅导员名称列表
            listTeacherName().then(res => {
                console.log(res)
                this.TeacherNameList = res.data
            })
        },
        getGradeNameList() {//获取年级名称列表
            listGrade().then(res => {
                this.gradeList = res.rows
            })
        },

        // 取消按钮
        cancel() {
            this.open = false;
            this.reset();
        },
        // 表单重置
        reset() {
            this.form = {
                classId: null,
                majorId: null,
                gradeId: null,
                className: null,
                deptId: null,
                teacherId: null,
                status: null,
                createBy: null,
                createTime: null,
                updateBy: null,
                updateTime: null
            };
            this.resetForm("form");
        },
        //搜索专业选择
        handleChange1(value) {
            this.queryParams.majorId = value[1]
            console.log(value);
        },
        //添加修改
        handleChange2(value) {
            this.form.majorId = value[1]
            console.log(value);
        },
        /** 搜索按钮操作 */
        handleQuery() {
            this.queryParams.pageNum = 1;
            this.getList();
        },
        /** 重置按钮操作 */
        resetQuery() {
            this.resetForm("queryForm");
            this.handleQuery();
        },
        // 多选框选中数据
        handleSelectionChange(selection) {
            this.ids = selection.map(item => item.classId)
            this.single = selection.length !== 1
            this.multiple = !selection.length
        },
        /** 新增按钮操作 */
        handleAdd() {
            this.reset();
            this.open = true;
            this.title = "添加班级信息";
        },
        /** 修改按钮操作 */
        handleUpdate(row) {
            this.reset();
            const classId = row.classId || this.ids
            getClass(classId).then(response => {
                this.form = response.data;
                this.open = true;
                this.title = "修改班级信息";
            });
        },
        /** 提交按钮 */
        submitForm() {
            this.$refs["form"].validate(valid => {
                if (valid) {
                    if (this.form.classId != null) {
                        updateClass(this.form).then(response => {
                            this.$modal.msgSuccess("修改成功");
                            this.open = false;
                            this.getList();
                        });
                    } else {
                        addClass(this.form).then(response => {
                            this.$modal.msgSuccess("新增成功");
                            this.open = false;
                            this.getList();
                        });
                    }
                }
            });
        },
        /** 删除按钮操作 */
        handleDelete(row) {
            const classIds = row.classId || this.ids;
            this.$modal.confirm('是否确认删除班级信息编号为"' + classIds + '"的数据项？').then(function () {
                return delClass(classIds);
            }).then(() => {
                this.getList();
                this.$modal.msgSuccess("删除成功");
            }).catch(() => { });
        },
        /** 导出按钮操作 */
        handleExport() {
            this.download('system/class/export', {
                ...this.queryParams
            }, `class_${new Date().getTime()}.xlsx`)
        }
    }
};
</script>